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United States Patent | 5,137,314 |
Gunter | August 11, 1992 |
A device for lifting catwalk grates comprising an elongated bent member with a handle at one end and a pair of notched braces and a hook at the opposite end that act in conjunction with each other to lock onto the grate and give mechanical advantage in lifting the grate.
Inventors: | Gunter; Larry W. (615 Sandpit Rd., Leesville, SC 29070) |
Appl. No.: | 665520 |
Filed: | March 5, 1991 |
Current U.S. Class: | 294/15; 254/131; 294/26 |
Intern'l Class: | B66F 011/00 |
Field of Search: | 294/15,17,19.1,26,9,12 254/131 |
1323052 | Nov., 1919 | Haselhurst | 254/131. |
1570192 | Nov., 1922 | Younick | 254/131. |
1794471 | Mar., 1931 | Moore | 294/15. |
2195667 | Apr., 1940 | Baker | 254/131. |
2599938 | Jun., 1952 | Price et al. | 294/15. |
3362684 | Jan., 1968 | Davenport | 294/15. |
3836119 | Sep., 1974 | Saucier, Sr. et al. | 254/131. |
3837622 | Sep., 1974 | Gale | 254/131. |
3843981 | Oct., 1974 | Verest | 254/131. |
3957247 | May., 1976 | Haller et al. | 254/131. |
3985338 | Oct., 1976 | Herrmann | 254/131. |
4183503 | Jan., 1980 | Ward | 254/131. |
4380326 | Apr., 1983 | Marzorati et al. | 254/131. |
4482182 | Nov., 1984 | Mortensen | 294/15. |
4488706 | Dec., 1984 | Kono | 294/15. |
4650232 | Mar., 1987 | Perry | 294/15. |
4746098 | May., 1988 | Abarotin | 254/131. |
4826388 | May., 1989 | Golding | 254/131. |
4838521 | Jun., 1989 | Moisan | 254/131. |
4991893 | Feb., 1991 | Gordon et al. | 254/131. |
Foreign Patent Documents | |||
2096936 | Oct., 1982 | GB | 254/131. |